My biggest complaint about Photoshop is that every time CPUs have gotten faster, it's gotten slower. I've used it since the mid 1990s recreationally, early 2000s professionally. Every time I get a major CPU upgrade, it will be fast for a while, but with updates become slow again. This pattern has repeated over and over again.

Most recently when I moved to Apple Silicon from an Intel Mac, I was excited how quickly everything worked again. Now my M1 is showing its age, and I noted when I started Photoshop the other day it took close to 30 seconds.

The UI is a little snapper than it was on a 68k Mac back in the 90s, but nowhere near the order of magnitude one would expect.

It’s better than a lot of modern software. One reason I stick with it is I have a hobby of printing smaller formats like 4x6 cards and Photoshop and Epson Print Layout are the only programs that I have 100% control of all the printer and color management settings and exactly where the image winds up on the printer (e.g. managing the mechanical uncertainty). I don’t send work out to people who have better printers because I don’t trust them to get it right.